Plug connector for verifying photoelectric speed sensor and verification device

Abstract

The utility model belongs to the technical field of detection equipment, and particularly discloses a plug connector for verifying a photoelectric speed sensor and a verification device. The plug connector is provided with a fixing surface for fixing the stepping motor, and the fixing surface is provided with a first opening; a mounting surface is arranged at a position opposite to the fixed surface, and a second opening is formed in the mounting surface; the first opening and the second opening penetrate through the interior of the insertion connecting piece; a transmission shaft of the stepping motor penetrates through the first opening and is located in the inserting connecting piece. A measuring shaft of the tested photoelectric speed sensor passes through the second opening and is connected with a transmission shaft of the stepping motor; the mounting surface is provided with a connecting mechanism used for detachable connection of the photoelectric speed sensor. According to the utility model, the photoelectric speed sensor can be quickly disassembled and assembled during verification, and the verification speed is obviously improved. The photoelectric speed sensor verification device is suitable for verification of a photoelectric speed sensor.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing equipment, and relates to a plug-in connector and a calibration device for calibrating photoelectric speed sensors. Background Technology

[0002] Rail-mounted work vehicles are important transportation and work tools widely used in various industrial, transportation, and special environments. The travel speed of a rail-mounted work vehicle is a key parameter for ensuring operational safety. Accurate speed information is crucial for ensuring driving safety and improving operational efficiency during operation. To obtain accurate speed information during rail-mounted work vehicle operation, photoelectric speed sensors are installed on the vehicle; their shape is as follows... Figure 1 As shown, it typically includes a mounting base and a measuring axis.

[0003] To ensure the accuracy of photoelectric speed sensor measurements, regular calibration is necessary. Existing speed sensor calibration devices connect the sensor's measuring shaft to the motor's drive shaft, then use four bolts passing through the four corners of the mounting base to secure the sensor. The sensor's qualification is determined by comparing the motor's rotational speed with the sensor's measured value. Each calibration requires disassembling and reassembling the bolts securing the sensor, resulting in low measurement efficiency and hindering the efficient completion of regular photoelectric speed sensor calibration tasks. Summary of the Invention

[0004] The purpose of this invention is to provide a plug-in connector for calibrating photoelectric speed sensors. This invention enables rapid assembly and disassembly of photoelectric speed sensors during calibration, significantly improving the installation speed of photoelectric speed sensors.

[0005] The second objective of this invention is to provide a calibration device that includes a plug-in connector for calibrating a photoelectric speed sensor.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A plug-in connector for calibrating a photoelectric speed sensor is provided for connecting the measuring shaft of the photoelectric speed sensor to the drive shaft of a stepper motor. The plug-in connector has a fixing surface for fixing the stepper motor, and the fixing surface has a first opening.

[0008] A mounting surface is provided at a position opposite to the fixed surface, and a second opening is provided on the mounting surface;

[0009] The first and second openings penetrate the interior of the plug-in connector;

[0010] The drive shaft of the stepper motor passes through the first opening and is located inside the plug-in connector;

[0011] The measuring shaft of the photoelectric speed sensor under test passes through the second opening and is connected to the drive shaft of the stepper motor;

[0012] The mounting surface is provided with a connection mechanism for detachable connection of the photoelectric speed sensor.

[0013] As a limitation, the connecting mechanism includes several limiting plates that match the mounting base of the photoelectric speed sensor;

[0014] The limiting plate is distributed around the mounting surface and abuts against the mounting base of the photoelectric speed sensor;

[0015] At least one of the limiting plates is provided with a clamping mechanism.

[0016] As a further limitation, the clamping mechanism includes an auxiliary plate, a connecting plate, a clamping plate, a limiting block, and a spring;

[0017] The auxiliary plate is parallel to the limiting plate where the clamping mechanism is located, and is fixedly connected to the limiting plate where the clamping mechanism is located through a connecting plate;

[0018] The auxiliary plate and the limiting plate where the clamping mechanism is located are provided with a third opening that matches the clamping plate. The clamping plate slides through the third opening and passes through the auxiliary plate and the limiting plate where the clamping mechanism is located respectively.

[0019] The distance between the card plate and the plug-in connector is the same as the thickness of the photoelectric speed sensor mounting base;

[0020] The limiting block is located between the auxiliary plate and the limiting plate where the clamping mechanism is located, and is fixedly connected to the clamping plate;

[0021] The springs are connected to the auxiliary plate and the limiting block, respectively.

[0022] As a constraint on the spring, the spring is always kept in a compressed state.

[0023] As a limitation on the card plate, the card plate is a wedge-shaped structure with one sharp end;

[0024] The tip of the wedge-shaped structure is located at one end of the card plate that penetrates the limiting plate.

[0025] A calibration device includes a stepper motor for connecting to the measuring axis of a photoelectric speed sensor under test, a plug-in connector for calibrating a photoelectric speed sensor as described above, and a configuration screen.

[0026] The configuration panel and the stepper motor have a two-way signal exchange, and the signal output terminal of the photoelectric speed sensor is connected to the signal input terminal of the configuration panel.

[0027] As a limitation, the configuration screen is equipped with touch-sensitive buttons for forward rotation, reverse rotation, stop, speed increase, speed decrease, acceleration increase, and acceleration decrease.

[0028] The technological advancements achieved by this invention compared to existing technologies, due to the adoption of the aforementioned technical solution, are as follows:

[0029] (1) This utility model realizes the quick assembly and disassembly of the photoelectric speed sensor by using the limiting plate on the mounting surface of the plug-in connector and the clamping mechanism. The photoelectric speed sensor can be inserted under the restriction of the limiting plate during installation, which greatly facilitates the installation of the photoelectric speed sensor and significantly improves the calibration speed.

[0030] (2) The present invention is equipped with a clamping mechanism, which effectively prevents the photoelectric speed sensor from falling off during calibration; after calibration, the photoelectric speed sensor can be disassembled by simply pulling the clamping plate, which greatly facilitates the disassembly of the photoelectric speed sensor.

[0031] (3) The present invention has a sloping surface on the card plate, so that the card plate can be pushed away by force when installing the photoelectric speed sensor; which greatly facilitates the installation of the photoelectric speed sensor.

[0032] (4) This utility model has multiple touch buttons on the configuration screen, which can provide comprehensive control and adjustment functions to ensure the accuracy and flexibility of speed sensor calibration.

[0033] This utility model belongs to the field of testing equipment technology. It enables rapid assembly and disassembly of photoelectric speed sensors during calibration, significantly improving the installation speed of photoelectric speed sensors and increasing the efficiency of calibration operations. Attached Figure Description

[0034] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0035] In the attached diagram:

[0036] Figure 1 This is a schematic diagram of an existing photoelectric speed sensor;

[0037] Figure 2 This is a schematic diagram of the plug-in connector in Embodiment 1 of this utility model;

[0038] Figure 3 This is a cross-sectional view of the clamping mechanism in Embodiment 1 of this utility model.

[0039] In the diagram: 1. Mounting base, 2. Measuring shaft, 3. Stepper motor, 4. Connecting piece, 5. First opening, 6. Second opening, 7. Limiting plate, 8. Clamping mechanism, 801. Auxiliary plate, 802. Clamping plate, 803. Limiting block, 804. Spring, 805. Connecting plate. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] Example 1: A plug-in connector for calibrating photoelectric speed sensors

[0042] like Figure 2 and Figure 3 As shown, this embodiment connects the measuring shaft 2 of the photoelectric speed sensor to the drive shaft of the stepper motor 3, wherein the structure of the photoelectric speed sensor is as follows. Figure 1 As shown. This embodiment provides a fixing surface for fixing the stepper motor 3. The fixing surface has a first opening 5.

[0043] A mounting surface is provided at a position opposite to the fixed surface. A second opening 6 is provided on the mounting surface. In order to connect the measuring shaft 2 and the drive shaft, the first opening 5 and the second opening 6 pass through the interior of the plug-in connector. The drive shaft of the stepper motor 3 passes through the first opening 5 and is located inside the plug-in connector 4, while the measuring shaft 2 of the photoelectric speed sensor under test passes through the second opening 6 and is connected to the drive shaft of the stepper motor 3.

[0044] The mounting surface is provided with a connection mechanism for detachable connection of the photoelectric speed sensor. The connection mechanism includes four limiting plates 7 that match the mounting base 1 of the photoelectric speed sensor. The four limiting plates 7 are distributed around the mounting surface and abut against the mounting base 1 of the photoelectric speed sensor. Matching here means that the four limiting plates 7 just abut against the mounting base 1, restricting the mounting base 1 within the four surrounding limiting plates 7.

[0045] To prevent the photoelectric speed sensor from falling during calibration, a clamping mechanism 8 is provided on one of the limiting plates 7. The clamping mechanism 8 includes an auxiliary plate 801, a connecting plate 805, and a clamping plate 802. The auxiliary plate 801 is parallel to the limiting plate 7 where the clamping mechanism 8 is located and is fixedly connected to the limiting plate 7 via the connecting plate 805. Both the auxiliary plate 801 and the limiting plate 7 have a third opening that matches the clamping plate 802. The clamping plate 802 slides through the third opening, passing through both the auxiliary plate 801 and the limiting plate 7. "Matching" here means that the clamping plate 802 can just pass through the third opening and slide at it. To ensure that the clamping plate 802 can effectively hold the photoelectric speed sensor, the distance between the clamping plate 802 and the plug-in connector 4 is the same as the thickness of the photoelectric speed sensor mounting base 1. To ensure that the clamping plate 802 always slides at the third opening, a limiting block 803 is fixedly connected to the clamping plate 802. The limiting block 803 is located between the auxiliary plate 801 and the limiting plate 7 where the clamping mechanism 8 is located. To enable the clamping plate 802 to automatically lock in place, a spring 804 is added. The two ends of the spring 804 are connected to the auxiliary plate 801 and the limiting block 803 respectively, and the spring 804 is always in a compressed state. The spring 804 always provides a compressive force to the limiting block 803, so that the clamping plate 802 is always subjected to a force towards the photoelectric speed sensor. This ensures that after the photoelectric speed sensor is installed in place, the clamping plate 802 can automatically move under the action of the spring force of the spring 804, thereby locking the photoelectric speed sensor.

[0046] To facilitate the installation of the photoelectric speed sensor, the card plate 802 is a wedge-shaped structure with a sharp end. The tip of the wedge-shaped structure is located at the end of the card plate 802 near the limiting plate 7, and the inclined surface of the wedge-shaped structure faces away from the stepper motor 3.

[0047] In this embodiment, the measuring axis 2 of the photoelectric speed sensor is first aligned with the drive shaft of the stepper motor 3. Then, under the constraint of the limiting plate 7, the photoelectric speed sensor is pushed towards the stepper motor 3. During the movement, the mounting base 1 of the photoelectric speed sensor touches and presses against the inclined surface of the clamping plate 802, pressing the inclined surface of the clamping plate 802 between the auxiliary plate 801 and the limiting plate 7. When the photoelectric speed sensor is pushed into place, the mounting base 1 of the photoelectric speed sensor just leaves the end face of the clamping plate 802. The clamping plate 802 returns to its original position under the elastic force of the spring 804, locking the mounting base 1 between the plug-in connector 4 and the clamping plate 802, thus completing the installation of the photoelectric speed sensor. After verification, the clamping plate 802 is manually pulled to release the restriction on the photoelectric speed sensor, allowing the photoelectric speed sensor to be removed.

[0048] In this embodiment, one of the four limiting plates 7 is provided with a clamping mechanism 8, while the other three limiting plates 7 are not provided with clamping mechanisms 8. The number of limiting plates 7 with clamping mechanisms 8 can be adjusted according to the actual situation, as long as the photoelectric speed sensor can be clamped.

[0049] In summary, this embodiment enables rapid assembly and disassembly of the photoelectric speed sensor during calibration, significantly improving calibration efficiency.

[0050] Example 2: A verification device

[0051] This embodiment is a calibration device, including a stepper motor 3 for connecting to the measuring axis 2 of the photoelectric speed sensor under test, and also includes a plug-in connector 4 for calibrating the photoelectric speed sensor as described in Embodiment 1, and a configuration screen.

[0052] The configuration panel and stepper motor 3 have two-way signal communication, connected via Modbus protocol; the signal output terminal of the photoelectric speed sensor is connected to the signal input terminal of the configuration panel.

[0053] To provide comprehensive control and adjustment functions, the configuration panel is equipped with touch-sensitive buttons for forward rotation, reverse rotation, stop, speed increase, speed decrease, acceleration increase, and acceleration decrease.

[0054] In this embodiment, the photoelectric speed sensor is first installed on the plug-in connector 4. Then, a button is pressed on the configuration screen to adjust the rotational speed of the stepper motor 3, and the speed feedback from the stepper motor 3 and the measurement signal feedback from the photoelectric speed sensor are received simultaneously. The two feedback signals are displayed and compared to verify the photoelectric speed sensor. Finally, the verified photoelectric speed sensor can be removed.

Claims

1. A plug connection for the calibration of an optical speed sensor, for connecting an optical speed sensor measuring shaft to a stepper motor drive shaft, characterized in that The plug-in connector is provided with a fixing surface for fixing the stepper motor, and the fixing surface is provided with a first opening; The plug-in connector is provided with a fixing surface for fixing the stepper motor, and the fixing surface is provided with a first opening; The first opening and the second opening pass through the inside of the plug-in connector; The transmission shaft of the stepper motor passes through the first opening and is located inside the plug-in connector; The measuring shaft of the measured photoelectric speed sensor passes through the second opening and is connected with the transmission shaft of the stepper motor; The installation surface is provided with a connecting mechanism for detachable connection of the photoelectric speed sensor.

2. A plug connector for the calibration of an optical electric speed sensor according to claim 1, characterized in that The connecting mechanism includes a plurality of limiting plates matched with the installation base of the photoelectric speed sensor; The limiting plates are distributed around the installation surface and abut against the installation base of the photoelectric speed sensor; At least one of the limiting plates is provided with a clamping mechanism.

3. A plug connector for the calibration of an optical electric speed sensor according to claim 2, characterized in that The clamping mechanism includes an auxiliary plate, a connecting plate, a clamping plate, a limiting block and a spring; The auxiliary plate is parallel to the limiting plate where the clamping mechanism is located, and is fixedly connected with the limiting plate where the clamping mechanism is located through the connecting plate; The auxiliary plate and the limiting plate where the clamping mechanism is located are provided with a third opening matched with the clamping plate, and the clamping plate slides through the third opening and passes through the auxiliary plate and the limiting plate where the clamping mechanism is located; The distance between the clamping plate and the plug-in connector is the same as the thickness of the installation base of the photoelectric speed sensor; The limiting block is located between the auxiliary plate and the limiting plate where the clamping mechanism is located, and is fixedly connected with the clamping plate; The spring is connected with the auxiliary plate and the limiting block respectively.

4. A plug connector for the calibration of an optical electric speed sensor according to claim 3, characterized in that The spring always maintains a compressed state.

5. A plug connector for the calibration of an optical or electro-optical speed sensor according to claim 3 or 4, characterized in that The clamping plate is a wedge-shaped structure with a sharp end; The sharp end of the wedge-shaped structure is located at one end of the clamping plate passing through the limiting plate.

6. A verification device comprising a stepper motor for connection to the measurement axis of a photoelectric speed sensor under test, characterized in that, The plug-in connector for calibrating the photoelectric speed sensor includes the plug-in connector according to any one of claims 1 to 5, and further includes a configuration screen; The configuration screen and the stepper motor are in signal double-end communication, and the signal output end of the photoelectric speed sensor is connected with the signal input end of the configuration screen.

7. A checking device according to claim 6, characterized in that The configuration screen is provided with forward rotation, reverse rotation, stop, speed increase, speed decrease, acceleration increase and acceleration decrease buttons which are set by touch.

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